Apparatus for molding plastic material.



A. G. BRUST. APPARATUS FOR MOLDING PLASTIC MATERIAL.

APPLIGATION FILED JULY3,1907.

Patented July 11, 1911.

3 SHEETS-SHEET l.

A. G. BRUST. APPARATUS FOR MOLDING PLASTIC MATERIAL.

APPLICATION FILED JULY 3, 1907. 997,647, Patented .July 11,1911.

3 SHEETS/*SHEET 2.

F535. 4 Fig@ A. 'G'. BRUST. APPARATUS POL'. MOLDING PLASTIC MATERIAL.

APPLICATION FILED JULY 3, 1907. 997,647, Patented July 11,1911.

SSHBETS-SHBBT 3.

GNN hlaoaao Y@ @trouw/13 llt .Il

sfrrns 1 ALBERT G. `BllEtl1l'S'1, OF WASHINGTON, DISTRICT 0F COLUMBIA, ASSIGNOR OFiONE-THIRD l TO EDWARD WILLOUGHBY ANDERSON, OF WASHINGTON, DISTRICT OF COLUMBIA.

sanear.

APPARATUS FOR IVIOIIDING PLASTIC MATRIL.

Specification of Letters Patent.

Patented J'uly M 191 l.

Application led July 3, 1907. Serial No. 382,087.

'To all whom `it 'may concer/n:

Be it known that I, ALBERT Gr. BRUST, citizen of the United States, resident of Vilashingtomin the District of Columbia, have made a certain new and useful Invention in Apparatus for Molding Plastic Material; and I declare the following to be a full,` clear, and exact description of the same, such as will enable others skilled in theart tov whichit appertains to make and use the invention, reference .being had to the accompanying drawings, and to letters or igures of reference marked thereon, which form a part of this speciication.

Figure 1 is a plan view of the apparatus, having endless chains with upper parts removed to show 'chain in full. Fig. 2 is a similar'view of a second form `of apparatus. Fig. 3 is a detail sectional view showing the special form of link for easy detachment at one point in the endless chain. Fig. 4 is a similar view showing the end portion ofthe second form of apparatus. Fig. 5 is a vertical section on the line 5 5, Fig. 7 Fig. 6 is a side view of a number of sections of the Y, apparatus. Fig. 7 is a horizontal section on the line 2L-7,' Fig. 5. Fig. 8 is a side view paratus.

of one of the sections or elements of the ap- Fig. 9 is a fragmentary perspective view of the same on a larger scale. Fig.

I0 is a fragmentary perspective view of thev modified form of link used at one point in each endless chain. Fig.` 11 is a detail sectional view of portions of abutting'or adjacent elements, with position of one element as turned for disengagement shown in dotted lines Fig. 12 is a detail plan view showing two adjacent sections or elements having beveled edges. 13 is a detail perspective View of one of the brace tubes.

rThe, invention has relation to apparatus formolding walls and partitions of plastic,

and especially of concrete, material, andrit consists in the novel construction and combinations of parts, as hereinafter set fort-h. The object of the invention is mainly to facilitate and thereby to save `Xpense in erecting concrete buildings, and with this object in view it is designed to provide means or apparatus which can be used over and over again in building thesame house i and in building other houses. y

To this end, it is designed by this' invention. to provide a iieXible mold-side consist ing of detachable elements, and-,in connection therewith means for bracing these mold walls in position for use.

In the accompanying drawings the letter a, designates an element or stave of the mold-side. This may consist of a board about four feet long by six inches Wide and two inches thick. Each stave is designed to t neatly against the next stave on the inside or molding surface, while the outside is rabbeted or cut away on the edges Ato provide seats for the knuckles of the link plates b. Each stave is designed to be provided with two or more of'y these link plates, which are firmly secured thereto by means of screws as indicated at c. The link used is designed to .form a detachable element of a chain of such links, and when a number ofv staves are connected by'their link plates the ribbon like .mold-side thereby formed is strong and durable, and capable of long service. Each link plate b, has at one end a pivot bar (Z, and at' the other a hook lug e, adapted to receive such a pivot bar when inserted therein at the proper angle in the manner indicated at f. When the stave, be-

ing connected in line, is brought into the plane of the other staves `the link plate will hold it securely in connection. Two endless chains of such stave-ribbon' mold sides are required in some cases to build a section of wall. These are placed opposite each other with their smooth inner surfaces facing, and they are held at the proper distance apart by means of brace tubes L, of terra cotta or other suitable material. The length of the tube z, governs the thickness of the concrete wall, and as these tubes can be provided very cheaply they can be left in the wall to take the place of concrete filling. Usually, however, on the foundationare laid longi-v tudinal bars or stringere s, at the proper distance apart for the thickness ofthe wall, and the bolts la, are passed through perforations m, of said stringere, these bolts with the transverse tubes .or braces serving to hold them in position at each side of thel foundation, where their inner edges serve as narrow parts of the mold wall, the other parts of which are provided by the inner surfaces of the series of upright mold staves or boards a. These are placed in series upon the inner portion of each Stringer or Stringer mold, andare held in place by means of longitudinal brace strips or bearings t, which ar'e connected to the stringers by means of buttons, or by means of other suitable fastenings whereby they can be secured in a temporary manner so that the brace bearings can be readily detached after the concrete has set. Similar sets ot longitudinal stringers or stringer molds and brace strips, together with their transverse bolts and transverse braces, are provided for the upper edges of the two series of mold staves, and seme to hold these edges in proper relation, the brace strips being connected in this case to the under sides of the stringers. )ind as these stringers and brace strips are similar to those placed at the lower edges of the mold sides, they are readily interchangeable.

In order that the elements ot' the endless chain maybe readily detached from the wall after is is set the connecting links of two adjacent outside elements of the chain are held together by means of a turn button shown at g, or other suitable device, so that upon turning this button to one side the links and elements connected thereby may be pulled apart wi lout the necessity of ing nailed or otherwise secured to boards or partitions l/. at the ends of the wall to be molded.A In this manner is provided thev principal apparatus for building a concrete wall or fioor, some simple modifications being had in view for use in molding corners, curved walls, and ceiling girders. special short link indicated at '0, is designed to be provided for a stave used in turning corners, whether of au upright wall or ot' a ceiling. And lfor vbuilding a curved wall the stave-ribbon may ha've its staves slightly beveled on their lateral edges as indicated at'- 2. Usually, however, there will bc play enough between the stavcs for large curvaturcs. Although these stave ribbons extend only a jf'ew feet in the vertical direction they are designed to be used over and over again, in building a wall of any height, in the following manner.

` A foundation bed or footing of concrete is first laid in trench according to the plan of the wall,` and on this are placed the bracing devices consisting of the stringers, Athe 'lhe' transverse bolts and the brace tubes. mold-sides are then placed in position opposite each other so that the lower edges are. seated along the inner portions of' and bearing on their respective stringers. The cx- .terior brace bearings are then secured in place and another set of Stringer molds and bracing devices is placed on top of the moldsides, so that they are secured in position above` and below. Concrete is then filled in between the mold-sides and when it has set sufficiently the lower brace bearings, bolts and stringers are removed, leaving the inalong the lower edges of the mold-sides are now put in place along their upper edges, in connection with a new set of brace tubes, so that the mold-sides are held in proper relation to each other. Concrete being then filled in, the wall is then raised thereby a second course, and after it has set sufficiently the mold-sides can be detached as hereinbefore described and raised and secured in position on the s tringers supported bythe second course of concrete for molding the third course, and so on until the wall is raised to the desired height.

vVhen the concrete work of the building is completed the stave-ribbons and bracing devices can be stored away for use in future work. As these stave ribbons can be put away in sections they can be readily stowed, and their transportation to the place of building is a matter of ordinary wagon. work. Being tiexible, the stave-ribl'ions can be arranged to conform with a plan of almost any design, and as they are very strong and durable they are designed to serve an excellent purpose in this important line of work.

Ilaving ldescribed my invention, what I claim and desire to secure by Letters Patent is.-

1. Apparatus of the class described, consisting of a series of detaehably connected mold boards, longitudinal stringer molds unconnected to said mold boards and adapt- 'Y sisting of -opposite parallel longitudinal -stringer molds, opposlteparallel series of ,upright iexibly Yconnected 4detachable dmol'df boards adapted -for endy abutment against said stringer molds, longitudinal bearings detachably 'connected'`A to said Stringer molds and adaptedtd abutv against said mold boards, and transverse tie-bolts `for holding said Stringer molds in parallel relation. A

4.',Alpparatu's ofqthe Vclass described, in-

i -cluding a mold side,.separa'te longitudinalv strmgesloose andv unconnected with lre- I spectithereto and vhaving Atheir I inner sur-l faces 1n the same 4plane as Aand forming continuations of the lnner surface of the mold side, said stringers being adapted for deings adapted for engagement With .said

` stringers,.and .means for holding said bear- .ings to` said stringersl in a detachableA mannerl 5. Apparatusvof the class described, comprisingop'posite mold sides, separate longitudinal stringers loose and unconnected with respect'thereto at each rside,'and having their inner 'surfaces forming continuasov nection with said stringere and adaptedl for abutment against said mold sides, and transverse tying means for hold-ing the mold' sides and vstringersin parallel relation.

v47, In.y apparatus of the class described,

the combination with broad iiexible moldingl members consisting of detachably connecte boards, of. narrow supporting molding members consisting of parallel longitudinal boards and-their connecting transverseftie bolts, vsaid narrow. members 'being unconnected to and adapted 4to'besupported by said iiexible' molding members, and means for holding said flexible moldinmembers flush with said longitudinal moldi bers -SIA mold for .forming vvalls of cnicrete tachable Vengagement With the ends of .the moldfsldes, long {itudinalY detachable bear-V vof the moldin I locking gether,

ture, in' presence ng mem'- or plastic material, comprising side mem- 'bers oppositely disposed and spaced apart,

holding members positioned between the side members horizontally and forming part of the molding` face of the side wall ofthe mold for holding the side members s spaced, and means for holding the holding members.' a

9. A mold for forming'walls of concrete or plastiematerial, comp/rising side mem bers' oppositely disposed 'and spaced apart,

'holding members positioned between' the side members .horizontally and forming part of the molding face of the side WallV of the mold; for -holding the side 'members so spaced,andl adjustable means for Vholding the holding members. l0. A mold for forming Wallsof concrete or plastic material, comprising side mem-l bersoppositel)7 4disposed and spaced apart,

holding members positioned .between the side members horizontally vand forming part mold for ho ding` the side members so face of the side Wall of the spaced, and means for locking the side meml bers and the holding members together to prevent lateral dis lacemcnt.

llr A' mold for arming Walls of .concrete or plastic lmaterial', comprising. side members oppositely ldisposed and spaced apart, holding members positioned between` the side members horizontally and forming part of the moldinvr face of the side Wall of they mold for holding the side 'members so spaced, means for locking the side members and Ithe holding members together to prevent lateral displacement, and means for locking the ends of the two side members together. l'

12. A mold for` forming Walls of `concrete or plastic material, comprising. side members oppositely disposed and .s aoed apart, holding members positioned etween the side members horizontall and forming part of the molding face of the side wall'of Athe moldl for holding the side members l so spaced, means for looking-`the side niem-V bers andthe holdingmembers together to prevent lateral displacement,l means for the ends of two side .members toand means for-.holding the ends of two holding members in alinement.

Inf testimony whereo'I ailix my signaof two witnesses. 4

ALBERT G. BRUST. Witnesses: ROBERT L. y" lonjson., 

